Source apportionment and elevational gradient of dissolved organic matter over the Tibetan plateau

被引:6
作者
Niu, Hewen [1 ]
Kang, Shichang [1 ,6 ]
Sarangi, Chandan [2 ,3 ]
Zhang, Guotao [4 ]
Chen, Mengxue [1 ]
Zhang, Yuzhong [5 ]
Qin, Huili [1 ]
机构
[1] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Natl Field Sci Observat & Res Stn Yulong Snow Mt, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
[2] Indian Inst Technol, Dept Civil Engn, Chennai, Tamil Nadu, India
[3] Indian Inst Technol Madras, Lab Atmospher & Climate Sci, Chennai, Tamil Nadu, India
[4] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
[5] Westlake Univ, Sch Engn, Hangzhou 310024, Peoples R China
[6] Univ Chinese Acad Sci UCAS, Beijing 10049, Peoples R China
基金
中国国家自然科学基金;
关键词
Cryosphere; Dissolved organic carbon; Dissolved organic nitrogen; Tibetan Plateau; CARBON; WATER; NITROGEN; ABSORPTION; AEROSOLS; GLACIER; EROSION; SNOW; STABILIZATION; DEPOSITION;
D O I
10.1016/j.catena.2022.106372
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Our understanding of water-soluble organic constituents and their transformation in the unique aqueous continuum over cryosphere region is scarce. Here, dissolved organic carbon (DOC), dissolved organic nitrogen (DON), and dissolved total nitrogen (DTN) and water-soluble inorganic ions in multiple water bodies from the eastern Tibetan Plateau (TP) cryosphere are systematically determined from a suite of field campaigns, laboratory experiments, linear regression analysis, and multiple comparisons, etc. We found that the water bodies located at high elevation have much lower DOC contents compared to the samples at lower elevation, there has significant altitude dependence of DOC abundance in water bodies over the study area (elevation range: 1971-4700 m asl). Comparison of optical properties, source apportionment, chemical analysis and model simulation of the water bodies provide evidence that the atmospheric deposition of organic species in high mountains is transported to plateau lakes in the northeast of TP via alpine runoff (45%) and snow/ice meltwater (20%). Further, dominance of anthropogenic activities in lower elevations can contribute (35%) to the observed altitudinal dependency. Thus, this preliminary study represents the first systematic investigation of the transport and cycling of organic carbonaceous matter and nitrogenous matter in eastern TP and warrants more robust in-situ observations and measurements in future in High Mountains of Asia.
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页数:12
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共 59 条
[1]   Effect of Photolysis on Absorption and Fluorescence Spectra of Light-Absorbing Secondary Organic Aerosols [J].
Aiona, Paige K. ;
Luek, Jenna L. ;
Timko, Stephen A. ;
Powers, Leanne C. ;
Gonsior, Michael ;
Nizkorodov, Sergey A. .
ACS EARTH AND SPACE CHEMISTRY, 2018, 2 (03) :235-245
[2]   Aerosols as a source of dissolved black carbon to the ocean [J].
Bao, Hongyan ;
Niggemann, Jutta ;
Luo, Li ;
Dittmar, Thorsten ;
Kao, Shuh-Ji .
NATURE COMMUNICATIONS, 2017, 8
[3]   Aerosol and snow transfer processes: An investigation on the behavior of water-soluble organic compounds and ionic species [J].
Barbaro, Elena ;
Zangrando, Roberta ;
Padoan, Sara ;
Karroca, Ornela ;
Toscano, Giuseppa ;
Cairns, Warren R. L. ;
Barbante, Carlo ;
Gambaro, Andrea .
CHEMOSPHERE, 2017, 183 :132-138
[4]   The changing carbon cycle of the coastal ocean [J].
Bauer, James E. ;
Cai, Wei-Jun ;
Raymond, Peter A. ;
Bianchi, Thomas S. ;
Hopkinson, Charles S. ;
Regnier, Pierre A. G. .
NATURE, 2013, 504 (7478) :61-70
[5]   Nitrogen Speciation and Isotopic Composition of Aerosols Collected at Himalayan Forest (3326 m a.s.l.): Seasonality, Sources, and Implications [J].
Bhattarai, Hemraj ;
Zhang, Yan-Lin ;
Pavuluri, Chandra Mouli ;
Wan, Xin ;
Wu, Guangming ;
Li, Peilin ;
Cao, Fang ;
Zhang, Wenqi ;
Wang, Yongjie ;
Kang, Shichang ;
Ram, Kirpa ;
Kawamura, Kimitaka ;
Ji, Zhenming ;
Widory, David ;
Cong, Zhiyuan .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2019, 53 (21) :12247-12256
[6]   Long-term (1980-2018) spatial and temporal variability of the atmospheric dust load and deposition fluxes along the North-African coast of the Mediterranean Sea [J].
Bibi, Mariem ;
Saad, Mohamed ;
Masmoudi, Mohamed ;
Laurent, Benoit ;
Alfaro, Stephane C. .
ATMOSPHERIC RESEARCH, 2020, 234
[7]   Source-diagnostic dual-isotope composition and optical properties of water-soluble organic carbon and elemental carbon in the South Asian outflow intercepted over the Indian Ocean [J].
Bosch, Carme ;
Andersson, August ;
Kirillova, Elena N. ;
Budhavant, Krishnakant ;
Tiwari, Suresh ;
Praveen, P. S. ;
Russell, Lynn M. ;
Beres, Nicholas D. ;
Ramanathan, Veerabhadran ;
Gustafsson, Orjan .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2014, 119 (20) :11743-11759
[8]   Effects of biogenic nitrate chemistry on the NOx lifetime in remote continental regions [J].
Browne, E. C. ;
Cohen, R. C. .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2012, 12 (24) :11917-11932
[9]   Molecular composition and photochemical evolution of water-soluble organic carbon (WSOC) extracted from field biomass burning aerosols using high-resolution mass spectrometry [J].
Cai, Jing ;
Zeng, Xiangying ;
Zhi, Guorui ;
Gligorovski, Sasho ;
Sheng, Guoying ;
Yu, Zhiqiang ;
Wang, Xinming ;
Peng, Ping'an .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (10) :6115-6128
[10]   Vegetation succession and its consequences for slope stability in SE Spain [J].
Cammeraat, E ;
van Beek, R ;
Kooijman, A .
PLANT AND SOIL, 2005, 278 (1-2) :135-147